Reaction tube



FIG. 1 is a perspective view of a reaction tube showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and

FIG. 7 is a bottom plan view thereof.

FIG. 8 is a cross sectional view taken along line 8-8 in FIG. 2 thereof;

FIG. 9 is a cross sectional view taken along line 9-9 in FIG. 2 thereof;

FIG. 10 is a cross sectional view taken along line 10-10 in FIG. 4 thereof; and,

FIG. 11 is a cross sectional view taken along line 11-11 in FIG. 4 thereof. 

CLAIM The ornamental design for a reaction tube, as shown and described. 